The uneasy alliance between Washington and Mexico City is facing fresh strain after reports of covert US involvement in anti-drug operations inside Mexico reignited concerns over sovereignty, secrecy and the expanding reach of America’s war on narcotics.
The controversy deepened after Mexican officials and the CIA reportedly rejected claims surrounding alleged US intelligence activity tied to counter-narcotics raids, according to reports.
At the centre of the diplomatic storm is US President Donald Trump, whose administration has intensified its crackdown on Latin American drug cartels since returning to the White House in January last year.
Framing the campaign as a fight against organised crime and fentanyl trafficking, Trump has pushed the boundaries of traditional US anti-drug policy in ways critics argue blur legal and presidential limits.
Washington has formally designated nine Latin American criminal groups as “terrorist organisations,” including Mexico’s powerful Sinaloa Cartel, La Nueva Familia Michoacana and Carteles Unidos.
The administration has also expanded military-style operations across regional waters, launching dozens of air strikes targeting vessels suspected of transporting narcotics through the Caribbean and Pacific corridors. Reports, allege that these operations have left more than 190 people dead.
The aggressive strategy has intensified long-standing friction with Mexico, a country US officials continue to identify as the principal transit route for fentanyl, cocaine, heroin and methamphetamine entering the United States.
Relations deteriorated further last month when Mexican President Claudia Sheinbaum threatened sanctions against authorities in the northern border state of Chihuahua after revelations that CIA-linked personnel allegedly took part in raids on clandestine drug laboratories.
Sheinbaum said senior members of her administration had not been informed of any US participation in the operations. The issue surfaced publicly after two Americans, reportedly working for the CIA, died in a car crash shortly after a counter-narcotics mission.
The incident has reignited debate in Mexico over foreign security operations on its soil.
Under legislation passed by Mexico’s Congress in 2020, foreign agents operating in the country must share intelligence with Mexican authorities and are stripped of diplomatic immunity protections.
For many observers, the dispute reflects a broader and increasingly fragile balancing act between cooperation and control.
While both governments remain under pressure to curb the flow of deadly narcotics, the growing presence of US intelligence and security personnel inside Mexico threatens to turn a shared security challenge into a diplomatic flashpoint.
